Hello, as Boomroasted mentioned, and as you briefly acknowledged yourself, what you did was wrong, plain and simple. Discord VCs are inherently OOC spaces, and using information from them in any capacity for in game decisions/actions is a direct violation of the rules. This standard exists for a reason: it protects the integrity of the roleplay and ensures that every player is operating on a fair and immersive playing field on the server.
While it may be unfortunate that you’re learning this lesson under these circumstances, it’s important to recognize the impact your actions had on the experience of others. Mixing OOC and IC information can seriously derail others roleplay, create unfair advantages, and break immersion for everyone involved.
With all of that in mind, I actually believe the ban you received was quite lenient already. Given the nature of the situation and how it affected the roleplay for multiple players, staff could have justifiably issued a more severe punishment. Hopefully this serves as a reminder going forward to be more careful, stay within the boundaries of the rules, and keep OOC spaces separate from in game roleplay.
I recommend you read through all the rules to avoid this happening again.